Added three new scripts to check the status of disk usage, system load and memory usage. Each script takes in options for warning and critical levels, as well as an option to choose which average to use for the load level. The output includes information on used, available and total space/usage along with percentage values.
This commit adds the GNU General Public License to the project, which is a free, copyleft license for software and other kinds of works. The license guarantees users' freedom to share and change all versions of a program, ensuring it remains free software for all its users. The license also requires developers to protect users' rights by asserting copyright on the software and offering legal permission to copy, distribute, and/or modify it.
